Catherine N. Wolff, DO
Internal Medicine Physician · South Bend, IN
Catherine N. Wolff, DO is an internal medicine physician with a practice address in South Bend, Indiana, and NPI 1154378602, issued on May 30, 2006. Check the license (Indiana 02004729A, as entered in NPPES) on the Medical Licensing Board of Indiana; the Medicare figures below come from public CMS files.
- Name
- Catherine N. Wolff
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 02004729A IN
3357 IA
Self-reported in NPPES; status is on the state search - Practice location
- 1815 E Ireland RD, South Bend, IN 46614
- Phone
- (574) 647-1700
- Enumerated
- May 30, 2006
- Record last updated
- Apr 6, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 201332450 IN
- Medicare enrollment
- Enrolled (PECOS I20151203000007); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 1997
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,109 in Indiana → Look up another NPI →
Also registered at 1815 E Ireland RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Mitchell DaughertySports Medicine (Family Medicine) Physician1417481540
- Douglas David, M.D.Family Medicine Physician1396733101
- Zhaijun Fan, DOFamily Medicine Physician1124225578
Verify Catherine N. Wolff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Licensing Board of Indiana
Search for license 02004729ACheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average internal medicine physician in 2024
9,827 Medicare Part D claims for 527 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 259 claims were for opioids.
Most prescribed
- Levothyroxine Sodium487 claims
- Atorvastatin Calcium483 claims
- Losartan Potassium363 claims
- Amlodipine Besylate342 claims
- Rosuvastatin Calcium320 claims
- Duloxetine Hcl317 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,229.39
76 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Beacon Medical Group IncSouth Bend, IN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine N. Wolff among 2,109 internal medicine physician records in Indiana
Catherine N. Wolff, DO is one of 2,109 internal medicine physician records with a practice address in Indiana. 85% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 54% newer
- In a Medicare fileYes · 85% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1997 · median 2005 among the 1,448 with a school on file
- Record last updated2021 · 43% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Indiana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
54 internal medicine physician records list a practice address in South Bend
They are 54 of the 3,178 NPPES records with a practice address in South Bend, and 2,109 internal medicine physician records in Indiana.
All 2,109 in Indiana → Every provider in South Bend → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Matthew Norton, DOSouth Bend, IN 466141205064870
- John Majewski, MDSouth Bend, IN 466161255967352
- Stephen Anderson, MDSouth Bend, IN 466171578554648
- Thomas Barbour, MDSouth Bend, IN 466171093704702
- Steven Crowell, MDSouth Bend, IN 466171003806829
- Ebonee Davis, MDSouth Bend, IN 466171295725646
- Gail English, MDSouth Bend, IN 466171356331151
- Wendell Garcia-Ortiz, MDSouth Bend, IN 466171972593630
Common questions
What is Catherine N. Wolff, DO's NPI number?
Catherine N. Wolff, DO's National Provider Identifier (NPI) is 1154378602, issued on May 30, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Catherine N. Wolff, DO located?
The NPPES record lists a practice address at 1815 E Ireland RD, South Bend, IN, 46614. Phone: (574) 647-1700. Providers update this record themselves, so call before visiting.
How can I verify Catherine N. Wolff, DO's license?
NPPES lists Indiana license number 02004729A, as entered by the provider. Search the Medical Licensing Board of Indiana at https://www.in.gov/pla/professions/physicians-home/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Catherine N. Wolff, DO prescribe under Medicare Part D?
In 2024, Catherine N. Wolff, DO had 9,827 Medicare Part D claims for 527 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.